WO2008004396A1 - Module de filtre et appareil de communication - Google Patents
Module de filtre et appareil de communication Download PDFInfo
- Publication number
- WO2008004396A1 WO2008004396A1 PCT/JP2007/061519 JP2007061519W WO2008004396A1 WO 2008004396 A1 WO2008004396 A1 WO 2008004396A1 JP 2007061519 W JP2007061519 W JP 2007061519W WO 2008004396 A1 WO2008004396 A1 WO 2008004396A1
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- WO
- WIPO (PCT)
- Prior art keywords
- port
- input
- filter
- filter module
- switch circuit
- Prior art date
Links
- 239000003990 capacitor Substances 0.000 claims description 26
- 230000005540 biological transmission Effects 0.000 claims description 13
- 238000010030 laminating Methods 0.000 claims description 5
- 238000010897 surface acoustic wave method Methods 0.000 claims description 5
- 238000003475 lamination Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 12
- 239000004020 conductor Substances 0.000 description 11
- 230000002411 adverse Effects 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H11/00—Networks using active elements
- H03H11/02—Multiple-port networks
- H03H11/32—Networks for transforming balanced signals into unbalanced signals and vice versa, e.g. baluns
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/18—Input circuits, e.g. for coupling to an antenna or a transmission line
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H11/00—Networks using active elements
- H03H11/02—Multiple-port networks
- H03H11/34—Networks for connecting several sources or loads working on different frequencies or frequency bands, to a common load or source
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/46—Networks for connecting several sources or loads, working on different frequencies or frequency bands, to a common load or source
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/02—Details
- H03H9/05—Holders; Supports
- H03H9/0538—Constructional combinations of supports or holders with electromechanical or other electronic elements
- H03H9/0566—Constructional combinations of supports or holders with electromechanical or other electronic elements for duplexers
- H03H9/0576—Constructional combinations of supports or holders with electromechanical or other electronic elements for duplexers including surface acoustic wave [SAW] devices
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/70—Multiple-port networks for connecting several sources or loads, working on different frequencies or frequency bands, to a common load or source
- H03H9/72—Networks using surface acoustic waves
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H1/00—Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network
- H03H2001/0021—Constructional details
- H03H2001/0085—Multilayer, e.g. LTCC, HTCC, green sheets
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H2250/00—Indexing scheme relating to dual- or multi-band filters
Definitions
- the present invention relates to a filter module that inputs and outputs two signals having different frequency bands, and a communication device including the same.
- mobile phone systems include various communication systems such as GSM and DCS, and dual-band or triple-band compatible devices that allow mobile terminals to support multiple systems have been developed.
- a switch circuit for switching the system to be used and a filter for removing signals other than the frequency being used are required.
- Patent Document 1 discloses a multiband filter module that inputs and outputs two signals having different frequency bands.
- FIG. 1 shows a configuration example of a filter module disclosed in Patent Document 1.
- the first port 100a of the first high-frequency switch 1 Oa is connected to the unbalanced port P1 of the filter module.
- the high-frequency switch 10a is a switch having three ports, and the second port 100b of the first high-frequency switch 10a is connected to the unbalanced port 110a of the first balanced-unbalanced bandpass filter 20a.
- the 3-port 100c is connected to the unbalanced port 120a of the second balanced-unbalanced bandpass filter 20b.
- the first and second balanced / unbalanced bandpass filters 20a and 20b are connected to a second high-frequency switch 10b and a third high-frequency switch 10c having three ports.
- the first port 130a of the second high-frequency switch is connected to the first balanced port P2 of the filter module.
- the first balanced port 110b of the first balanced-unbalanced bandpass filter 20a is connected to the second port 130b, and the second balanced-unbalanced bandpass is connected to the third port 130c.
- the first balanced port 120b of the filter 20b is connected.
- the first port 150a of the third high-frequency switch is connected to the second balanced port P2 of the filter module.
- -2 port 150b is connected to the first balanced-unbalanced bandpass filter 20a
- the second balanced port 110c is connected to the second balanced port 110c
- the second balanced port 120c of the second balanced-unbalanced bandpass filter 20b is connected to the third port 150c.
- Patent Document 1 Japanese Unexamined Patent Application Publication No. 2004-166258
- Such a circuit has a problem that the circuit scale is large because the switches 10b and 10c are required on both the input side and the output side.
- an object of the present invention is to select and solve the problem caused by unnecessary signal leakage of the signal path force used in the other system in the state where one of the two communication systems having different frequency bands is communicating. It is to provide a filter module with improved performance and a communication device equipped with the same.
- the filter module of the present invention includes first and second input / output units (Tl) (T2) and a common input / output unit, and the common input / output unit is connected to the first port (P1). And a first filter that passes a signal in the first frequency band is provided between the first input / output section (T1) and the second port (P2) of the switch circuit. In the filter module, a second filter that passes a signal of the second frequency band is provided between the second input / output section (T2) of the switch circuit and the second port (P2). , The impedance in the second frequency band viewed from the first port (PI) in a state where the switch circuit selects the first input / output unit is substantially short-circuited.
- the first and second filters have a function of converting a balanced signal and an unbalanced signal, the second port is a balanced terminal, and the first and second filters are Signals shall be input / output in a balanced manner with the second port.
- the switch circuit is formed integrally with a laminate formed by laminating a plurality of dielectric layers.
- the first and second filters are surface acoustic wave filters or thick longitudinal vibration piezoelectric filters mounted on the laminate.
- the phase adjustment circuit includes any one of a transmission line, a cupacitor, and an inductor.
- the switch circuit includes a capacitor and an inductor, the phase adjustment circuit includes a transmission line, and the transmission line of the phase adjustment circuit when the multilayer body is seen through from the lamination direction of the dielectric layer. Is arranged in a layer different from the layer forming the capacitor or inductor of the switch circuit.
- the communication device of the present invention is configured by including the filter module in a high frequency circuit section.
- the switch circuit is integrated in a laminated body formed by laminating a plurality of dielectric layers, and a first and second surface acoustic wave filter or thickness longitudinal vibration piezoelectric filter force is formed on the laminated body.
- a first and second surface acoustic wave filter or thickness longitudinal vibration piezoelectric filter force is formed on the laminated body.
- the switch circuit selecting the first input / output unit, the switch circuit is such that the impedance in the second frequency band as viewed from the first port is substantially short-circuited. Since the phase adjustment circuit is provided between the first input / output section and the first filter, the phase adjustment circuit easily rotates the above impedance as viewed from the first port on the Smith chart. Can be close to the short. Therefore, the passage of signals leaking through the second filter and the switch circuit can be effectively suppressed.
- phase adjustment circuit includes any one of a transmission line, a capacitor, and an inductor, the phase adjustment circuit can be easily provided together with the elements constituting the switch circuit. An increase in size due to the provision of a circuit can be avoided.
- the transmission line that is the phase adjustment circuit is disposed in a layer different from the layer that forms the capacitor or the inductor included in the switch when the multilayer body is seen in a plan view from the lamination direction of the dielectric layer.
- a small and low-cost communication device that handles a plurality of communication signals having different frequency bands can be configured.
- FIG. 1 is a diagram showing a configuration of a filter module disclosed in Patent Document 1.
- FIG. 2 is a circuit diagram of the filter module according to the first embodiment.
- FIG. 3 is a characteristic diagram when the phase adjustment circuit of the filter module is not provided.
- FIG. 4 is a characteristic diagram when a phase adjustment circuit of the filter module is provided.
- FIG. 5 is a view showing a conductor pattern of each dielectric layer in the case where the filter module is composed of a laminate of dielectric layers.
- FIG. 6 is a view showing a conductor pattern of each dielectric layer in the case where the filter module is formed of a laminate of dielectric layers.
- FIG. 7 is a view showing a conductor pattern of each dielectric layer in the case where the filter module is formed of a laminate of dielectric layers.
- FIG. 8 is a circuit diagram of a filter module according to a second embodiment.
- FIG. 9 is a view showing a conductor pattern of each dielectric layer in the case where the filter module is constituted by a laminate of dielectric layers.
- FIG. 10 is a diagram showing a conductor pattern of each dielectric layer in the case where the filter module is constituted by a laminate of dielectric layers.
- FIG. 11 is a view showing a conductor pattern of each dielectric layer in the case where the filter module is constituted by a laminate of dielectric layers.
- FIG. 12 is a diagram showing a configuration of a communication device according to a third embodiment.
- FIG. 2 is a circuit diagram of the filter module according to the first embodiment.
- This filter module 100 has a first input / output port Pl for inputting / outputting signals in an unbalanced type, a second input / output port P2 for inputting / outputting signals in a balanced type, and a control terminal Vc for switching frequency bands. It is a thing.
- This filter module 100 is roughly divided into a first filter Fl and a second filter. Filter F2 and switch circuit SW.
- the switch circuit SW includes a common input / output unit connected to the first port P1, a first input / output unit Tl, and a second input / output unit 2.
- a first filter F1 that passes a signal in the first frequency band (850 MHz) is provided between the first input / output unit T1 and the second port 2 of the switch circuit SW.
- a second filter F2 that passes a signal in the second frequency band (900 MHz) is provided between the second input / output unit T2 of the switch circuit SW and the second port P2.
- a phase adjustment circuit Ls is provided between the first input / output unit T1 and the first filter F1.
- the second port P2 has a matching element (inductor) Lbal between its balanced terminals.
- a diode D1 is provided in series via a capacitor Cs. Between the power sword side of the diode D1 and the ground, an inductor SL as a DC control voltage application path and a capacitor Cu850 that resonates with the inductor SL are provided.
- the first port P1 is provided with a matching capacitor Cu.
- a diode D2 is connected to the shunt via a capacitor C5 between the second input / output unit T2 and the ground.
- a matching capacitor Cu900 is connected between the second input / output section T2 and the ground.
- a strip line SL2 having an electric length of approximately 1Z4 wavelength in the 850 MHz band is provided between the connection point between the anode of the diode D1 and the capacitor Cs and the force sword of the diode D2.
- a resistor R is connected between the control terminal Vc and the anode of the diode D2.
- the diodes Dl and D2 are both off, so that the signal propagates between the second input / output unit T2 and the first port P1.
- the diodes Dl and D2 are both turned on, and the signal propagates between the first input / output unit T1 and the first port P1.
- the signal passing through the filters Fl and F2 can be switched only by providing the single switch circuit SW as described above. However, a signal that tries to pass through the filter side that is not selected by the switch circuit SW leaks through the switch circuit SW, and signals with unnecessary frequencies are likely to pass through. Yes.
- the GSM850 signal is input from the first port P1 and output from the second port P2.
- the 900MHz band signal leaks through the switch circuit SW, passes through the second filter F2, and slightly leaks into the second port P2.
- the GSM900 signal is superimposed on the GSM850 signal.
- the switch circuit SW selects and passes the signal of the filter on the side and the switch circuit SW. Since leakage occurs, signals with unnecessary frequencies can easily pass through.
- the phase adjustment circuit Ls in FIG. 2 is provided in order to solve the above problem of passing a signal having an unnecessary frequency.
- a 900 MHz band signal is input from the first port P1
- this signal does not pass through the first filter F1 and is reflected to the first port P1, but the phase of this reflected signal is adjusted in phase.
- the switch circuit SW selects the first input / output unit T1
- the phase adjustment circuit Ls has an impedance at a frequency in the 900 MHz band when the filter module is viewed from the first port P1, and is almost short-circuited. Adjust the phase so that
- the filter module When the filter module is viewed from the first port P1 in a state where the switch circuit SW selects the first input / output unit T1, the predetermined frequency (900 MHz) of the second frequency band is obtained. If the impedance at) is almost short, the signal component in the 900MHz band that tries to pass through the leakage of the second filter F2 and the switch circuit SW is suppressed.
- FIG. 3 and FIG. 4 show the operation of the phase adjustment circuit Ls.
- 3 is a characteristic diagram when the phase adjustment circuit Ls is not provided
- FIG. 4 is a characteristic diagram when the phase adjustment circuit Ls is provided.
- Fig. 3 (A) ⁇ Fig. 4 (A) shows the pass characteristics between the first port P1 and the second port P2.
- Fig. 3 (B) ⁇ Fig. 4 (B) shows the reflection characteristics of the filter module viewed from the first port P1, that is, the reflection coefficient S (l, 1) in terms of the S-norm, on the Smith chart (impedance chart). It is a figure (impedance locus when frequency is swept).
- Points m39, m35, m5, and ml in Fig. 3 and Fig. 4 indicate points at 824 MHz.
- Points m40, m36, m6, and m2 are all points at 849MHz.
- Points m41, m37, m7, and m3 are all points at 880MHz.
- points m42, m38, m8, and m4 all indicate points at 915 MHz.
- the impedance locus on the Smith chart is clockwise by a predetermined angle (about 120 in this example). °) Rotating.
- the signal component in the 900 MHz band is suppressed by adjusting the phase so that the impedance in the 900 MHz band to be attenuated is almost short, that is, near the left end on the Smith chart. Will be.
- the attenuation in the 900 MHz band is improved by about 3 dB. .
- the impedance in this frequency band exists near the reference impedance (center on the Smith chart), and the influence of the phase adjustment by the phase adjustment circuit Ls Hardly receive. This means that the insertion loss in the 850 MHz band (center frequency of about 837 MHz) does not deteriorate, as can be seen from the pass characteristics shown in Fig. 3 (A) ⁇ Fig. 4 (A).
- phase adjustment circuit Ls operates in the same manner on a signal passing from the second port P2 to the first port P1. That is, the 900 MHz band component of the signal input from the second port P2 is equivalently almost short-circuited at the output terminal of the force switch circuit SW passing through the second filter F2, so that the 900 MHz band signal is suppressed.
- the phase adjustment circuit Ls is provided between the first input / output unit T1 of the switch circuit SW and the first filter F1, but the switch circuit SW is connected to the first input / output unit. If this filter module is viewed from the first port P1 with the part T1 selected, and if the impedance at the specified frequency in the second frequency band is almost short, an independent phase adjustment circuit Ls is not necessary. In other words, the above conditions may be satisfied by appropriately determining the electrical length of the transmission line from the switch circuit SW to the first filter F1 and the circuit configuration of the switch circuit SW.
- FIG. 5 to FIG. 7 show that the above filter module is integrated into a laminate formed by laminating dielectric layers.
- FIG. 7 is a plan view of a conductor pattern on the lower surface of each of a plurality of dielectric layers.
- FIG. 5A is the bottom layer
- FIG. 7B is the top layer
- FIG. 7C is a plan view with each chip mounted on the top surface of the top layer.
- GND is a ground electrode.
- P1 is a terminal of the first port
- P2 is a terminal of the second port
- G is a ground terminal
- Vc is a control terminal
- Conductor patterns Cu, Cu900, and Cu850 in FIG. 5C constitute capacitors Cu, Cu900, and Cu850, respectively, facing the ground electrode GND in FIGS. 5B and 5D.
- the first filter F1 that passes the 850 MHz band and the second filter F2 that passes the 900 MHz band are formed as one element.
- Wave filter SAW, chip inductor SL, chip capacitors Cs and C5, diodes Dl and D2, and chip resistor R are mounted.
- a thickness longitudinal vibration piezoelectric filter may be used instead of the surface acoustic wave filter.
- FIG. 8 is a circuit diagram of a filter module according to the second embodiment.
- This filter module 100 includes an unbalanced first input / output port Pl for inputting / outputting signals, a second input / output port P2 for inputting / outputting signals unbalanced, and a control terminal Vc for switching frequency bands. It is equipped with.
- the filter module 100 is roughly composed of a first filter Fl, a second finisher F2, and a switch circuit SW.
- the switch circuit SW includes a common input / output unit connected to the first port P1, a first input / output unit Tl, and a second input / output unit ⁇ 2.
- a first filter F1 that passes a signal in the first frequency band (850 MHz) is provided between the first input / output unit T1 and the second port 2 of the switch circuit SW.
- a second filter F2 that passes a signal in the second frequency band (900 MHz) is provided between the second input / output unit T2 of the switch circuit SW and the second port P2.
- a phase adjustment circuit Z is provided between the first input / output unit Tl and the first filter Fl.
- a matching element (inductor) Lin is provided between the second port P2 and the ground.
- a diode D1 is provided in series via a capacitor Cs.
- a strip line SL1 is provided as a DC control voltage application path between the power sword side of the diode D1 and the ground.
- the first port P1 is provided with a matching capacitor Cul!
- a diode D2 is connected to the shunt via a capacitor C5 between the second input / output unit T2 and the ground.
- a strip line SL2 for phase adjustment is provided between the connection point between the anode of the diode D1 and the capacitor Cs and the force sword of the diode D2.
- a resistor R is connected between the control terminal Vc and the anode of the diode D2.
- the diodes Dl and D2 are both off, so that the signal propagates between the second input / output unit T2 and the first port P1.
- a predetermined positive voltage is applied to the control terminal Vc, both the diodes Dl and D2 are turned on, and the signal propagates between the first input / output unit T1 and the first port P1.
- FIG. 9 to FIG. 11 are diagrams showing a configuration in which the filter module is integrated with a laminated body formed by laminating dielectric layers, and these drawings show the layers of a plurality of dielectric layers. It is a top view of the conductor pattern in the lower surface.
- FIG. 9 (A) is the bottom layer
- FIG. 11 (D) is the top layer
- FIG. 11 (E) is a plan view with each chip mounted on the top surface of the top layer.
- Fig. 9 to Fig. 11 for the convenience of illustration.
- the reference numerals in the figure correspond to the reference numerals in the circuit shown in FIG.
- GND is a ground electrode.
- P1 is a terminal of the first port
- P2 is a terminal of the second port
- G is a ground terminal
- Vc is a control terminal.
- the conductor pattern C5 in FIGS. 9C and 9E forms a capacitor C5 opposite to the ground electrode GND in FIGS. 9B, 9D, and 9F!
- the first filter F1 that passes the 850 MHz band and the second filter F2 that passes the 900 MHz band are configured as one element on the upper surface of the laminate.
- phase adjustment circuit Z composed of a transmission line is formed.
- This phase adjustment circuit Z is arranged on an independent layer different from the layer forming the capacitor and inductor constituting the switch circuit SW. Therefore, each element of the switch circuit does not adversely affect the phase adjustment circuit Z. Conversely, the phase adjustment circuit Z can perform a predetermined phase adjustment without affecting other circuits.
- the phase adjustment circuit is configured by the transmission line connected in series to the signal propagation path.
- a capacitor can be connected to the shunt between the line and the ground, and the two may be combined.
- the chip is configured by mounting a chip inductor or chip capacitor on the stack. May be.
- the example of suppressing the passage of the 900 MHz band signal when the 850 MHz band is selected is shown.
- the second filter F2 and the switch that pass the 900 MHz band are used. This can also be applied to the case where a phase adjustment circuit is provided between the H and the SW circuit to suppress the passage of signals in the 850 MHz band when the 900 MHz band is selected.
- FIG 12 shows the configuration of the high-frequency circuit section of a quad-band mobile phone.
- This high-frequency circuit section comprises a triple-band chip set 103, a balanced-unbalanced filter module 100, a triple-band antenna switch module 101, and an antenna 102! /.
- the antenna switch module 101 is an antenna switch for GSM900ZDCS 1800 / PCS 1900 and shares the antenna 102 in this frequency band.
- a filter module 100 is connected to the GSM port, and the GSM850 and GSM900 are switched by the filter module 100.
- Triple-band chipset 103 is a chipset for GSM900ZDCS1800ZPCS1900 and operates as an RF (high frequency) front-end circuit for this triple-band.
- a mobile phone can be configured by connecting a baseband chip (not shown) to the triple-band chip set 103 and further providing an input / output unit for the baseband chip.
- the GSM850 and GSM900 perform balanced input / output, so the balanced input / output port of the filter module 100 is represented by two terminals.
- a quad-band mobile phone can be easily configured by configuring a high-frequency circuit in which the filter module 100 shown in the first embodiment is combined with the triple-band chip set 103.
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- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Transceivers (AREA)
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008523625A JP4692631B2 (ja) | 2006-07-05 | 2007-06-07 | フィルタモジュールおよび通信装置 |
EP07744849.6A EP2037577B1 (en) | 2006-07-05 | 2007-06-07 | Filter module and communication apparatus |
CN2007800246315A CN101479935B (zh) | 2006-07-05 | 2007-06-07 | 滤波器模块及通信装置 |
US12/254,895 US7586388B2 (en) | 2006-07-05 | 2008-10-21 | Filter module and communication apparatus |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006185673 | 2006-07-05 | ||
JP2006-185673 | 2006-07-05 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/254,895 Continuation US7586388B2 (en) | 2006-07-05 | 2008-10-21 | Filter module and communication apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008004396A1 true WO2008004396A1 (fr) | 2008-01-10 |
Family
ID=38894369
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2007/061519 WO2008004396A1 (fr) | 2006-07-05 | 2007-06-07 | Module de filtre et appareil de communication |
Country Status (6)
Country | Link |
---|---|
US (1) | US7586388B2 (ja) |
EP (1) | EP2037577B1 (ja) |
JP (1) | JP4692631B2 (ja) |
KR (1) | KR100956297B1 (ja) |
CN (1) | CN101479935B (ja) |
WO (1) | WO2008004396A1 (ja) |
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JP2012191596A (ja) * | 2011-02-23 | 2012-10-04 | Murata Mfg Co Ltd | インピーダンス変換デバイス、アンテナ装置および通信端末装置 |
JP2013106128A (ja) * | 2011-11-11 | 2013-05-30 | Taiyo Yuden Co Ltd | フロントエンドモジュール |
US8699966B2 (en) | 2011-03-04 | 2014-04-15 | Murata Manufacturing Co., Ltd. | High-frequency switch module |
WO2015056473A1 (ja) * | 2013-10-17 | 2015-04-23 | 株式会社村田製作所 | 高周波回路モジュール |
CN111937315A (zh) * | 2018-04-05 | 2020-11-13 | 株式会社村田制作所 | 高频模块 |
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TWI451694B (zh) * | 2010-02-06 | 2014-09-01 | Hon Hai Prec Ind Co Ltd | 濾波器及具有該濾波器的電子設備 |
JP5850049B2 (ja) * | 2011-05-09 | 2016-02-03 | 株式会社村田製作所 | 通信端末装置 |
JP5609918B2 (ja) * | 2012-05-09 | 2014-10-22 | 株式会社村田製作所 | スイッチモジュール |
JP6455532B2 (ja) * | 2015-02-05 | 2019-01-23 | 株式会社村田製作所 | 高周波スイッチモジュール |
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US11916514B2 (en) | 2017-11-27 | 2024-02-27 | Silicon Laboratories Inc. | Radio-frequency apparatus with multi-band wideband balun and associated methods |
US11894621B2 (en) | 2017-12-18 | 2024-02-06 | Silicon Laboratories Inc. | Radio-frequency apparatus with multi-band balun with improved performance and associated methods |
US11894826B2 (en) | 2017-12-18 | 2024-02-06 | Silicon Laboratories Inc. | Radio-frequency apparatus with multi-band balun and associated methods |
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JP2012191596A (ja) * | 2011-02-23 | 2012-10-04 | Murata Mfg Co Ltd | インピーダンス変換デバイス、アンテナ装置および通信端末装置 |
US8699966B2 (en) | 2011-03-04 | 2014-04-15 | Murata Manufacturing Co., Ltd. | High-frequency switch module |
JP2013106128A (ja) * | 2011-11-11 | 2013-05-30 | Taiyo Yuden Co Ltd | フロントエンドモジュール |
WO2015056473A1 (ja) * | 2013-10-17 | 2015-04-23 | 株式会社村田製作所 | 高周波回路モジュール |
US9883585B2 (en) | 2013-10-17 | 2018-01-30 | Murata Manufacturing Co., Ltd. | Radio-frequency circuit module |
CN111937315A (zh) * | 2018-04-05 | 2020-11-13 | 株式会社村田制作所 | 高频模块 |
CN111937315B (zh) * | 2018-04-05 | 2022-03-25 | 株式会社村田制作所 | 高频模块 |
Also Published As
Publication number | Publication date |
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JP4692631B2 (ja) | 2011-06-01 |
EP2037577A1 (en) | 2009-03-18 |
CN101479935A (zh) | 2009-07-08 |
CN101479935B (zh) | 2011-08-10 |
EP2037577A4 (en) | 2011-01-26 |
KR20080103092A (ko) | 2008-11-26 |
EP2037577B1 (en) | 2014-01-15 |
US7586388B2 (en) | 2009-09-08 |
KR100956297B1 (ko) | 2010-05-10 |
JPWO2008004396A1 (ja) | 2009-12-03 |
US20090033437A1 (en) | 2009-02-05 |
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